Advertisements
Advertisements
प्रश्न
Write a short answer.
How are the bones of birds different from those of other vertebrates?
Advertisements
उत्तर
The bones of birds have large air cavities (are hollow) and hence are light. This enables them to fly. On the other hand, bones of other vertebrates are dense and solid and form a _ heavy skeleton.
APPEARS IN
संबंधित प्रश्न
Give two examples of Arthropods:
Categorize the following animals under their appropriate columns of classification
| Animals | ||||
| Dog | Grasshopper | Rat | Scorpin | Toad |
| Butterfly | Lizzard | Turtle | Frog | Bat |
| Snail | Honey bee | Pigeon | Liverfluke | Leech |
| Cattle | snake | Rohu | Parrot | Ascaris |
| Earthworm | Cow | Rabbit | Monkey | Elephant |
|
Classification: |
||||
| Worms | Molluscs | Fishes | Amphibians | Reptiles |
| Birds | Mammals |
Differentiate between
radially symmetrical and bilaterally symmetrical body
Write a short answer.
Name the special organs of excretion in annelids?
Write a short answer.
Write two examples of myriapods.
Given below are groups of animals, and their characteristics features. Some of the features are incorrect. Identify the odd one out in each.
| Group | Characteristic features | Odd one out |
| Porifera | porous animals, have tentacles, fixed to surface | |
| Amphibia | cold-blooded, lungs in adults, scaly skin | |
| Aves | cold-blooded, wings, feathers, bones with large air spaces | |
| Pisces | live in water, scaly skin warm-blooded, fins for swimming |
Write two main characters of the following animal and name the phylum it belongs to: Starfish
Give an account on the classification of invertebrates with few general features and examples.
Cyclostmes are ______.
List the integumentary glands of mammals.
